What's going on here? Problem: What happens to matter when it undergoes a physical and chemical change? Hypothesis: . Materials: pencil, piece of paper Background: This lab should be a fun one! Your teacher had a little extra time this weekend so she decided to clean out the attic. During the process she found a whole bunch of scientific recipes and other cool stuff. She used as many of these recipes as they could in today's lab. Procedure:
Make sure to identify whether what you witnessed was a physical or chemical change, in each appropriate box. Below you will find eight different lab activities, each has a different letter. You will be assigned to a letter to start on. Take your time, when in doubt look back to the definitions of both processes
Stations:
A. There's nothing like burnt toast- Look at a piece of bread and a piece of burnt toast. Compare the two of them. I wonder is toasting a chemical or physical process. Remember things may not be what they first appear.
B. Making Orange Soda- Use a half-cup full of Orange Juice look at the Juice and make some observations. Then add a half of spoonful of baking soda, and a half a spoonful of sugar and stir it in pretty well. Now fill the cup the rest of the way with water. Now compare what you have with all the ingredients you used.
C. Bubbles- Using two to three fresh straws and a bubble pan. Designate which of you will take turns blowing bubbles in the pan. You each get three tries, blow the biggest bubble you can. While you were blowing bubbles, was the bubble solution undergoing a physical or chemical change?
D. I'm Melting!- Grab a piece of ice in it's dish. Look at it, what's happening and why? Physical or Chemical change?
E. Time to break stuff- Take a few popsicle sticks from the box. Try to break them into as many pieces as you can. What's process did the sticks just undergo?
F. Be careful, very careful- At this station you will be using Bleach. Bleach is a very toxic substance, it can easily kill living tissue. Take an eye dropper of bleach and two pieces of color construction paper. Now let the Rembrandt in you come out, use the bleach to make a painting on the construction paper. Now the science part, what process did the construction paper undergo?
G. Wow, now that's cool- Take two spoonfuls of Sodium Bicarbonate put it in a beaker & add 25 mL's of acetic acid. Clean up when your done. What happened?
H. How ya like them Apples?- Beware the answer to this is not as easy as it seems. Get an apple, cut a small slice off with the plastic knife and watch this slice for about six minutes. What is happening?
Problem: What happens to matter when it undergoes a physical and chemical change?
Hypothesis: .
Materials: pencil, piece of paper
Background: This lab should be a fun one! Your teacher had a little extra time this weekend so she decided to clean out the attic. During the process she found a whole bunch of scientific recipes and other cool stuff. She used as many of these recipes as they could in today's lab.
Procedure:
Stations: